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All Journal AUSTENIT Machine : Jurnal Teknik Mesin Jurnal Inovator JURNAL CRANKSHAFT MACHINERY: Jurnal Teknologi Terapan International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS)
Sampurno, Rachmat Dwi
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Static Stress Analysis of Fork on Rubber Slab Lifting Aid using Finite Element Method Khoirullah, Ananda Thomas; Sampurno, Rachmat Dwi; Sailon, Sailon; Ramadhoni, Tri Satya; Rizal, Syamsul; Yuliandi, Rizky Brillian
International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Vol. 2 No. 3 (2024): IJMEAS - September
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijmeas.v2i3.316

Abstract

The focus of this research is to simulate the static stress on the fork component of the tool to analyze the strength and feasibility of the design. The simulation used a method called Finite Element Method (FEA), which allows to find any problems before the prototype is made. The material used is ASTM A36 steel with a yield strength value of 250 MPa. The loading used is 300 kg with the direction of the force centered on the y-axis of the beam right in the middle of the object. With variable fork design dimensions that have been simplified in the form of 762x101.6x31.75 mm; 1219.2x127x44.45 mm; and 2133.6x152.4x50.8 mm, the distribution of analysis results consisting of maximum bending stress, moment, displacement, and factor of safety is obtained. The maximum bending stress values for designs A, B, and C in the simulation are 65.688 MPa; 42.891 MPa; and 47.897 MPa, respectively, with moment values of 1121.283 N.m; 1793.758 N.m; and 3139.592 N.m. Meanwhile, the displacement values in the simulation results for each design are 2.508 mm; 2.992 mm; and 8.948 mm, respectively, with factor of safety values of 3.8; 5.8; and 5.2. Static stress analysis on the fork design produces analytical calculation values and simulation calculations with small tolerances. Based on the results of these calculations, it is concluded that the most optimal fork design is design B because it has a lower value of maximum bending stress and displacement, and has a higher factor of safety value than other designs.
Analisis Kegagalan Pipa Elbow Superheater 90° Terhadap Perlakuan Bending Menggunakan Hydraulic Pipa Bender Sampurno, Rachmat Dwi; Tafrant, Dodi; Putri, Fenoria; Hendradinata, Hendradinata; Arnoldi, Dwi; Ramadhan, Surya
JURNAL CRANKSHAFT Vol 8, No 2 (2025): Jurnal Crankshaft Vol. 8 No. 2 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i2.15058

Abstract

Steam power plants are the most widely used power plants. The steam produced will be channeled using a superheater pipe. The component that often fails is the superheater elbow pipe. The method used is purposive sampling. The test method used is metallographic testing where the test is based on ASTM. For the results of reading the microstructure content, the percentage of the microstructure phase of the sample tested was factory factory elbow superheater pipe with a percentage of 53.50% pearlite and 27.50% ferrite, the flexible superheater elbow pipe sample contained 43.00% pearlite and 36% ferrite. . 00%, the leaking superheater elbow pipe sample contained 37.50% pearlite and 43.00% ferrite. So the conclusion is that the superheater elbow pipe which has high hardness and good pearlite and ferrite content is found in the factory ebow superheater pipe sample, the manual bending elbow superheater pipe experienced a reduction in the pearlite phase and the addition of a ferrite phase, so it can be concluded that this sample experienced a reduction in resistance and hardness, The Leaking superheater elbow pipe sample has high hardness due to the heat treatment process and a martensite phase appears due to heating, while the percentage of pearlite decreases and ferrite increases, and if there is more ferrite in the material, the pressure in the pipe will be decreased.Steam power plants are the most widely used power plants. The steam produced will be channeled using a superheater pipe. The component that often fails is the superheater elbow pipe. The method used is purposive sampling. The test method used is metallographic testing where the test is based on ASTM. For the results of reading the microstructure content, the percentage of the microstructure phase of the sample tested was factory factory elbow superheater pipe with a percentage of 53.50% pearlite and 27.50% ferrite, the flexible superheater elbow pipe sample contained 43.00% pearlite and 36% ferrite. . 00%, the leaking superheater elbow pipe sample contained 37.50% pearlite and 43.00% ferrite. So the conclusion is that the superheater elbow pipe which has high hardness and good pearlite and ferrite content is found in the factory ebow superheater pipe sample, the manual bending elbow superheater pipe experienced a reduction in the pearlite phase and the addition of a ferrite phase, so it can be concluded that this sample experienced a reduction in resistance and hardness, The Leaking superheater elbow pipe sample has high hardness due to the heat treatment process and a martensite phase appears due to heating, while the percentage of pearlite decreases and ferrite increases, and if there is more ferrite in the material, the pressure in the pipe will be decreased.
OPTIMALISASI SISTEM VENTILASI MEKANIK UNTUK MENINGKATKAN KENYAMANAN TERMAL DI RUANGAN TERPAPAR PANAS MATAHARI Paramadhony; Setiati, Tri Woro; Turnip, Parngongo; Akbar, Imam; Sampurno, Rachmat Dwi; Rachman, Fadhiil Fuad
AUSTENIT Vol. 17 No. 1 (2025): AUSTENIT: April 2025
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v17i1.10711

Abstract

Climate change has increasingly influenced thermal dynamics in both outdoor and indoor environments, leading to elevated indoor temperatures that can significantly compromise occupant thermal comfort. This comfort is intrinsically linked to psychological well-being, sleep quality, and overall productivity. Indoor thermal conditions are governed by multiple parameters, including internal and external heat gains, building envelope characteristics, and the effectiveness of ventilation systems. In response, the deployment and optimization of mechanical ventilation systems have become essential strategies in architectural and HVAC design to ensure better indoor environmental quality (IEQ). Moreover, energy-efficient mechanical systems are critical for minimizing operational energy consumption and also for mitigating greenhouse gas (GHG) emissions associated with building operations. This study employs Computational Fluid Dynamics (CFD) simulations to analyze the influence of mechanical ventilation placement on indoor temperature distribution, with a specific focus on enclosures with solar-exposed walls. The findings aim to inform design strategies for ventilation layout optimization that enhance thermal comfort while supporting energy-efficient and sustainable building practices. The research findings indicate that the position of the exhaust fan plays a crucial factor in thermal comfort. When it’s placed near to the heat source, it provides higher airflow near to the heat source that helps maintain temperature stability and prevent the spread of heat throughout the room.
RANCANG BANGUN MESIN PENYULING ASAP CAIR DARI BATOK KELAPA DENGAN APLIKASI TEKNOLOGI REFRIJERASI BERBASIS SEMI-OTOMASI (MIKRO-KONTROLLER) Sampurno, Rachmat Dwi; Homzah, Ozkar F.; Ismail, Iskandar; Pangestu, Wahyu Adjie; Utama, Kodri Hudiya
MACHINERY Jurnal Teknologi Terapan Vol. 2 No. 1 (2021): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (26.112 KB) | DOI: 10.5281/zenodo.4662523

Abstract

 Alat penyulingan asap cair berbasis microkontroller bertujuan untuk membantu para petani yang memproduksi asap cair dimana pada asap cair digunakan untuk pembekuan getah karet agar dapat meningkatkan hasil pembuatan asap cair dengan menggunakan aplikasi teknologi refrijerasi yang basis pengontrolannya menggunakan hardware arduino yang di program dengan menggunakan aplikasi matlab sehingga berdampak positif dalam proses pemasaran hasil penjualan asap cari yang sebelumnya menggunakan air yang bersuhu ± 29°C. Proses perancangan alat memanfaat bantuan perangkat lunak CAD sedangkan untuk pembuatan menggunakan mesin mesin bor, mesin gerinda tangan, mesin las listrik dan alat perkakas tangan. Setelah dilakukan pembuatan, prototipe alat akan dilakukan uji coba pada laboratorium untuk melihat fungsi kerja alat.
KEKERASAN DAN STRUKTUR MIKRO BAJA AISI 1040 SEBAGAI HASIL PROSES QUENCHING MENGGUNAKAN PENDINGIN AIR GARAM DAN ASAP CAIR Tafrant, Dodi; Hendradinata, Hendradinata; Mulyadi, Mulyadi; Sampurno, Rachmat Dwi; Sani, Almadora A.; Karmin, Karmin; Hidayat, Randy; Muzafar, M. Agil; Fitriani, Devita Dinda
MACHINERY Jurnal Teknologi Terapan Vol. 3 No. 2 (2022): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.6857629

Abstract

Steel with various uses has an important role in machining and construction processes. In its use, steel is chosen because of its strength, ductility, and hardness. One type of steel commonly used in the machining process is AISI 1040 steel. This is because AISI 1040 steel has tough, strong, and hard properties. However, in its use sometimes AISI 1040 steel must be hardened to be more capable in its use. In that endeavor, AISI 1040 steel can be subjected to heat treatment to change its microstructure from initially Ferrite and Pearlite, to Martensite. This change in microstructure has an effect on increasing the hardness value of AISI 1040 steel. This study was conducted to determine how much effect the increase in hardness value would have if AISI 1040 steel was subjected quenching using brine and liquid smoke as cooling media. The results obtained were an increase in the hardness value of AISI 1040 steel to 63.76 HRc, and 65.40 HRc for each cooling medium. The visible microstructure is the formation of a martensitic phase on AISI 1040 steel after heat treatment.
Analisis Pengaruh Persentase Campuran Resin dan Katalis Terhadap Ketahanan Korosi Pada Pelapisan Material Poros ST 37 Tafrant, Dodi; Rasid, Muhammad; Alimedi, Alimedi; Safei, Safei; Sampurno, Rachmat Dwi
Jurnal INOVATOR Vol. 7 No. 1 (2024): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v7i1.291

Abstract

Secara umum, resin memiliki kegunaan sebagai agen perekat untuk material-material tertentu. Resin sendiri merupakan suatu campuran likuid yang terdiri dari beragam senyawa kompleks seperti alkohol, asam resinat, dan ester resnotannol. Menurut Kuspradini (2016), resin dapat ditemukan secara alami maupun dibuat secara sintetis, dan memiliki sifat-sifat seperti padat, transparan dengan sedikit kekeruhan, berkilauan, mudah terbakar, dan cenderung meleleh saat terpapar panas. Penggunaan resin sering kali digunakan untuk mengatasi proses korosi pada logam dengan menerapkan metode pelapisan. Proses pengeringan resin, terutama dalam campuran dengan katalis, memengaruhi waktu pengerasan dan kemampuan perekat resin pada material logam yang diuji. Penelitian ini bertujuan untuk mengurangi korosi pada material poros dengan menggunakan campuran resin dan katalis dengan perbandingan 1:15 dan 1:20. Proses pengujian korosi dilakukan dengan merendam spesimen uji dalam larutan air garam 3,5% selama 40 hari. Berat spesimen uji sebelum dan sesudah proses korosi akan diukur menggunakan timbangan digital. Hasil penelitian menunjukkan bahwa campuran resin dan katalis dengan perbandingan 1:15 menghasilkan tingkat laju korosi yang lebih rendah daripada bahan mentah (row material) dan campuran resin dan katalis dengan perbandingan 1:20. Terjadi penurunan laju korosi sebesar 0,9114 x 10^-6 gr/menit pada campuran dengan perbandingan 1:15, sementara pada campuran resin 1:20, terdapat kecenderungan peningkatan laju korosi.
Static Analysis of Electric Vehicle Prototype Frame Ramadhoni, Tri Satya; Rifa'i, Ahmad Imam; Anwar, Zainuri; Hidayati, Baiti; Sumarna, Herlin; Okviyanto, Toni; Sampurno, Rachmat Dwi
International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Vol. 2 No. 1 (2024): IJMEAS - January
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijmeas.v2i1.242

Abstract

This study aims to determine the strength of the prototype car frame created by the SMES (Sriwijaya Mechanical Engineering Squad) team in participating in the KMHE (Energy Efficient Car Contest) and SEM (Shell Eco-Marathon). This prototype vehicle is an energy-efficient car with an electric motor drive and utilizes a hollow rectangular tube-shaped frame with aluminum 6061 material. The overall dimensions of the car frame are 2500x410x540 mm. Static loading analysis was conducted using manual calculations and computer simulations. Static loading was performed on seven support bars, the main bar, and the overall prototype car frame. Applied loads include the electric motor load, control panel, battery load, driver's body load, driver's legs, front body load, rollbar body load, rear body load, and reaction loads from bars receiving direct loads. Autodesk Inventor software with frame analysis features was used in the simulation process. Based on the results of manual calculations and computer simulations, the difference in the average results of maximum bending moment, maximum stress, and displacement on the seven types of support bars, with a small error tolerance below 10%, is 1.01%, 5.24%, and 3.25%, respectively. Based on computer simulation results for the main bar and seven types of support bars, the highest maximum stress occurs in the main bar, which is 128727.37 N.
STUDI PERFORMASI SUDU TURBIN ANGIN SAVONIUS TIPE VERTICAL AXIS BERBAHAN KOMPOSIT Homzah, Ozkar F.; Sundari, Ella; Sampurno, Rachmat Dwi; Utami, Ogi Meita; Rahmawati, Lily
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3317

Abstract

The increasing human population, the use of fossil energy such as oil also increases. While fossil energy is one of the largest contributors to carbon emissions that can cause climate change that can be done to control climate change is to switch to the use of renewable energy. The investigation takes the shape of a vertical axis Savonius turbine blade design. The blades are made of a composite material called carbon fiber, and the number of blades varies between 4, 6, and 8 pieces. The study's findings were tested utilizing a blower-generated wind source with wind speeds of 4m/s, 4.5m/s, and 5m/s. A wind tunnel consisting of acrylic material and pipes as a frame construction was used in the test. The test findings show that turbine blades with a total of four blades produce the maximum generator power of 0.274 watts at a wind speed of 5 m/s. Meanwhile, the turbine blade with 8 blades has the lowest output power at a wind speed of 4 m/s and a power value of 0.0028 W. Then, with 8 blades, it has a relatively low output energy compared to 4 and 6 blades. Therefore, the highest efficiency performance of wind turbine use is achieved by a turbine with a number of 4 blades with a maximum efficiency is 9,16% and the minimum efficiency it seen in a wind turbine with a number of blades 8 within 0,07%.
PEMANFAATAN LIMBAH ASAP DARI BATOK KELAPA DENGAN MESIN PENYULING ASAP CAIR DI KABUPATEN BANYUASIN Sampurno, Rachmat Dwi; Homzah, Ozkar F.; Suryana, Didi; Sani, Almadora Anwar; Alexander, Willy
AUSTENIT Vol. 13 No. 1 (2021): AUSTENIT: April 2021
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Batok Kelapa merupakan salah satu bahan yang dapat diproses dalam pembuatan asap cair. Proses produksi arang dari batok kelapa secara tradisional yaitu dengan metode drum klin berpotensi menimbulkan polusi udara. Mesin penyulingan asap cair berbasis mikrokontroller bertujuan untuk membantu para pembuat arang dalam meminimalisisr dampak kesehatan akibat polusi udara dari asap serta menambah pendapatan berupa produk asap cair. Hasil pengujian prototipe diharapkan dapat meningkatan hasil produksi asap cair yaitu membandingkan menggunakan media air dengan temperatur ± 29°C dan menggunakan  refrigerasi yangmana temperatur air diturunkan sampai 15°C dengan pengontrolan mikrokontoller-Arduino UNO. Berdasarkan hasil pengujian di Desa Tanjung Lago Kabupaten Banyuasin diperoleh produk berupa asap cair tanpa sistem refrijerasi sebanyak 203 ml dan penyulingan dengan menggunakan sistem refrijerasi sebanyak 375 ml asap cair.
PENGARUH QUENCHING MEDIA PENDINGIN MINYAK GORENG BEKAS TERHADAP KEKERASAN BAJA S45C YANG TELAH DI PACK CARBURIZING Putri, Fenoria; Gumay, Muhammad Fadel; Effendi, Sairul; Sampurno, Rachmat Dwi
AUSTENIT Vol. 13 No. 2 (2021): AUSTENIT: Oktober 2021
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Material baja seringkali digunakan dalam dunia otomatif yang menuntut material tersebut harus memiliki kekuatan yang tangguh, handal dan ekomonis. Salah satu material yang digunakan yaitu S45C, dimana material tersebut diberikan perlakuan permukaan dengan cara Pack Carburizing    dengan    temperatur  870°C   dan   variasi    media    pendingin    cepat    (quenching) berupa   oli   bekas,   oli   baru,   dan   minyak   goreng   bekas. Selanjutnya dilakukan pengujian menggunakan alat kekerasan Rockweel   Hardness   Tester dan dilakukan analisa   data hasi    uji    menggunakan    analysis    of    varians    (ANOVA). Hasil yang didapat nilai kekerasan untuk material S45C dengan pendingin oli bekas, oli baru dan mnyak goring bekas yaitu 101,9 HRC; 98,4 HRC dan 102,8 HRC.
Co-Authors Achva, RA. Jihan Ulima Alexander, Willy Alimedi, Alimedi Anwar, Zainuri Apandi, Khairul Arnoldi, Dwi Ayuni, Riski Azhari, Ikbal Dodi Tafrant Effendi, Sairul Fadilah, Muhammad Arif Fitriani, Devita Dinda Gumay, Muhammad Fadel Hendradinata, Hendradinata Hendri Chandra Hidayat, Randy HIDAYATI, BAITI Imam Akbar, Imam Indra Gunawan Ismail, Iskandar Karmin Karmin, Karmin Khoirullah, Ananda Thomas Lily Rahmawati, Lily Muarif, M. Awal Mulyadi Mulyadi Muzafar, M. Agil Okviyanto, Toni Ozkar F. Homzah, Ozkar F. Pangestu, Wahyu Adjie Paramadhony Putri, Fenoria Rachman, Fadhiil Fuad Ramadhan, Surya Ramadhoni, Tri Satya Rasid, Muhammad Rifa'i, Ahmad Imam Safei Safei Sailon, Sailon Sani, Almadora A. Sani, Almadora Anwar Setiati, Tri Woro Sumarna, Herlin Sundari, Ella Suryana, Didi Syamsul Rizal Tafrant, Dodi Turnip, Parngongo Utama, Kodri Hudiya Utami, Ogi Meita Yuliandi, Rizky Brillian